' OLDER POTOMAC OF VIRGINIA AND MARYLAND. 531 



Ficus MYRicoiDEs Hollick." 



PL CXII, Fig. 12. 



1895. Ficus myricoides Hollick in Newberry: Flora of the Amboy Clays (Monogr. 

 U. S. Geol. Surv., Vol. XXVI), p. 71, pi. xxxii, fig. 18; pi. xli, figs. 8, 9. 



Three specimens of a dicotyledon were obtained from the Rosiers 

 Bluff locality, one on June 13 and two (including the one figured) on 

 November 25, 1891, that are indicated by Professor Ward on the lal^els 

 as F. myricoides Hollick. As this species is unknown to me I have 

 requested Professor Ward to describe it (see footnote). 



PiNUS. SCHISTA Ward n. sp. 

 PI. CXII, Figs. 13-1.5. 



Five small winged seeds were obtained at Rosiers Bluff that seem to 

 belong to a new species of Pinus. The seeds proper are elliptical in form, 

 and average a little more than 2 mm. in length and H mm. in width in 

 the widest part. The wing is, in proportion to the seed, very large and 

 projects beyond it at one end. In the lai'gest the length of the wing 

 is nearly 1 cm. The wing is split into two segments. On most of the 

 seeds obtained only one of the segments was retained, but its shape 

 shows that it forms one of an opposing pair. In a few cases both seg- 

 ments were preserved. ** The seeds are not unlike those of Picea excelsa 

 (Poir.) Link. 



PI. CXII, Fig. 14, gives a seed of normal size and shape, with one 

 segment of a wing. Fig. 15 shows one with the wing retaining portions 

 of both segments. Both the specimens figured were collected on No- 

 vember 25, 1891. 



At Rosiers Bluff a few fragments of one-nerved, Pinus-like leaves 

 were found. These may belong to this species, but they are too vague 

 and imperfect to show any particular character. 



« A more thorough comparison, aided by a good figure, does not change my opinion that these specimens 

 belong to F. myricoides, but it is true that I have not yet seen Doctor Hollick's types. — L. F. W. 



fiMiss Mary Mason Mitchell, who made the drawings, observed that at least in one case (see Fig. 14) 

 nerves or fibers crossed from one part to the other of the split wing, tending to prove that the splitting is 

 accidental. I had suspected this, and noted the further tendency of the ends of the wings to split or fray 

 and become ragged. Nevertheless, all the seeds in the collection are thus divided into two divaricate halves, 

 which I have never observed in any other seed of Pinus, living or fossil. — L. F. W. 



